502
FNCA52 TJSJ 140917
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
517 AM AST WED JAN 14 2026
DISCUSSION
KBDI VALUES IN CABO ROJO ARE AROUND 622, WHILE IN GUANICA 502 AND
IN CAMP SANTIAGO 552. DAYTIME MINIMUM RH VALUES ARE EXPECTED TO
DROP NEAR CRITICAL VALUES THIS AFTERNOON. WINDS WILL VEER TODAY
FROM THE EAST TO SOUTHEAST AND RANGE BETWEEN 10 AND 15 MPH WITH
HIGHER GUSTS AND SEA BREEZE VARIATIONS. WE ENCOURAGE THE FIRE-
WEATHER COMMUNITY TO MONITOR THE DRYING TREND, AS CONDITIONS COULD
WORSEN IF NO RAINFALL OCCURS OVER THESE LOCATIONS. RAIN CHANCES
SLIGHTLY INCREASE AROUND FRIDAY AND THEN EARLY NEXT WEEK.
PRZ014-150930-
SOUTHEAST COASTAL PLAINS-
517 AM AST WED JAN 14 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 40 30
TEMP (24H TREND) 87 (+2) 69 (-1) 87
RH % (24H TREND) 51 (-3) 93 (+2) 56
WIND 20FT/EARLY(MPH) SE 14 G20 E 11 SE 13 G18
WIND 20FT/LATE(MPH) SE 14 G20 E 11 SE 13 G18
MIXING HGT(FT-AGL/MSL)4780 4500
TRANSPORT WND (MPH) E 15 SE 15
VENT RATE (KT-FT) 62140 58500
DISPERSION 5 5
DSI 5 4 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ015-150930-
SOUTHERN HILLS-
517 AM AST WED JAN 14 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 30 30
TEMP (24H TREND) 83 (+3) 66 (-2) 83
RH % (24H TREND) 63 (-4) 98 (+5) 67
WIND 20FT/EARLY(MPH) SE 11 E 10 SE 11
WIND 20FT/LATE(MPH) SE 11 E 10 SE 11
MIXING HGT(FT-AGL/MSL)5310 5320
TRANSPORT WND (MPH) E 14 SE 15
VENT RATE (KT-FT) 63720 69160
DISPERSION 5 5
DSI 5 3 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ016-150930-
NORTH COASTAL PLAINS-
517 AM AST WED JAN 14 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 20 50
TEMP (24H TREND) 86 (+2) 68 (-1) 87
RH % (24H TREND) 61 (-5) 100 (+2) 62
WIND 20FT/EARLY(MPH) E 14 SE 12 E 13 G17
WIND 20FT/LATE(MPH) E 14 SE 12 E 13 G17
MIXING HGT(FT-AGL/MSL)5180 5030
TRANSPORT WND (MPH) E 13 SE 13
VENT RATE (KT-FT) 56980 55330
DISPERSION 5 5
DSI 5 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ017-150930-
NORTHERN HILLS-
517 AM AST WED JAN 14 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 30 50
TEMP (24H TREND) 85 (+2) 66 (-1) 85
RH % (24H TREND) 59 (-5) 98 (0) 60
WIND 20FT/EARLY(MPH) E 12 SE 10 SE 12
WIND 20FT/LATE(MPH) E 12 SE 10 SE 12
MIXING HGT(FT-AGL/MSL)6250 6090
TRANSPORT WND (MPH) E 9 SE 12
VENT RATE (KT-FT) 50000 60900
DISPERSION 5 5
DSI 5 3 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ018-150930-
WEST COAST-
517 AM AST WED JAN 14 2026
TODAY TONIGHT THU
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 20 20
TEMP (24H TREND) 87 (+2) 69 (+1) 87
RH % (24H TREND) 60 (-3) 97 (+1) 61
WIND 20FT/EARLY(MPH) SE 13 E 11 SE 14
WIND 20FT/LATE(MPH) SE 13 E 11 SE 14
MIXING HGT(FT-AGL/MSL)4850 4910
TRANSPORT WND (MPH) SE 10 SE 15
VENT RATE (KT-FT) 43650 63830
DISPERSION 5 5
DSI 5 3 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ019-150930-
EASTERN INTERIOR-
517 AM AST WED JAN 14 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 30 40
TEMP (24H TREND) 84 (+3) 67 (-2) 84
RH % (24H TREND) 64 (-4) 100 (+3) 68
WIND 20FT/EARLY(MPH) SE 12 E 11 SE 12
WIND 20FT/LATE(MPH) SE 12 E 11 SE 12
MIXING HGT(FT-AGL/MSL)5180 5210
TRANSPORT WND (MPH) SE 15 SE 15
VENT RATE (KT-FT) 67340 67730
DISPERSION 5 5
DSI 5 3 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ022-150930-
LUQUILLO MOUNTAIN RANGE-
517 AM AST WED JAN 14 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 40 60
TEMP (24H TREND) 79 (+2) 66 (-2) 79
RH % (24H TREND) 70 (-4) 100 (+1) 75
WIND 20FT/EARLY(MPH) SE 11 E 9 SE 10
WIND 20FT/LATE(MPH) SE 11 E 9 SE 10
MIXING HGT(FT-AGL/MSL)4090 3570
TRANSPORT WND (MPH) SE 16 SE 16
VENT RATE (KT-FT) 57260 49980
DISPERSION 5 5
DSI 5 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ023-150930-
CENTRAL MOUNTAIN RANGE-
517 AM AST WED JAN 14 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 20 40
TEMP (24H TREND) 82 (+3) 64 (-1) 83
RH % (24H TREND) 61 (-6) 98 (+1) 63
WIND 20FT/EARLY(MPH) SE 8 SE 6 SE 10
WIND 20FT/LATE(MPH) SE 8 SE 6 SE 10
MIXING HGT(FT-AGL/MSL)6540 6290
TRANSPORT WND (MPH) SE 9 SE 13
VENT RATE (KT-FT) 52320 69190
DISPERSION 5 5
DSI 5 2 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ024-150930-
CAYEY MOUNTAIN RANGE-
517 AM AST WED JAN 14 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 40 40
TEMP (24H TREND) 79 (+2) 66 (-1) 78
RH % (24H TREND) 71 (-2) 100 (+2) 76
WIND 20FT/EARLY(MPH) E 10 E 8 SE 10
WIND 20FT/LATE(MPH) E 10 E 8 SE 10
MIXING HGT(FT-AGL/MSL)4640 4210
TRANSPORT WND (MPH) E 16 SE 15
VENT RATE (KT-FT) 64960 54730
DISPERSION 5 5
DSI 5 4 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ025-150930-
VIEQUES-
517 AM AST WED JAN 14 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 60 60
TEMP (24H TREND) 85 (0) 71 (-1) 85
RH % (24H TREND) 60 (-1) 99 (+5) 64
WIND 20FT/EARLY(MPH) E 12 E 14 G17 SE 13 G17
WIND 20FT/LATE(MPH) E 12 E 14 G17 SE 13 G17
MIXING HGT(FT-AGL/MSL)3490 3100
TRANSPORT WND (MPH) E 17 SE 17
VENT RATE (KT-FT) 52350 46500
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ026-150930-
CULEBRA-
517 AM AST WED JAN 14 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 40 50
TEMP (24H TREND) 85 (0) 73 (-2) 85
RH % (24H TREND) 61 (-3) 96 (+8) 65
WIND 20FT/EARLY(MPH) E 13 G17 E 14 G19 SE 14 G18
WIND 20FT/LATE(MPH) E 13 G17 E 14 G19 SE 14 G18
MIXING HGT(FT-AGL/MSL)3540 2980
TRANSPORT WND (MPH) E 17 SE 18
VENT RATE (KT-FT) 53100 47680
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ027-150930-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
517 AM AST WED JAN 14 2026
TODAY TONIGHT THU
CLOUD COVER MCLEAR PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 0 30 20
TEMP (24H TREND) 88 (+2) 70 (0) 88
RH % (24H TREND) 51 (-2) 93 (+4) 53
WIND 20FT/EARLY(MPH) SE 18 G23 E 14 G19 SE 18 G24
WIND 20FT/LATE(MPH) SE 18 G23 E 14 G19 SE 18 G24
MIXING HGT(FT-AGL/MSL)4880 4820
TRANSPORT WND (MPH) E 17 SE 18
VENT RATE (KT-FT) 73200 77120
DISPERSION 5 5
DSI 5 5 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ001-150930-
SAINT THOMAS AND SAINT JOHN-
517 AM AST WED JAN 14 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 30 30
TEMP (24H TREND) 85 (+1) 73 (-2) 86
RH % (24H TREND) 61 (-3) 97 (+8) 64
WIND 20FT/EARLY(MPH) E 14 G18 E 16 G20 E 14 G18
WIND 20FT/LATE(MPH) E 14 G18 E 16 G20 E 14 G18
MIXING HGT(FT-AGL/MSL)3570 3010
TRANSPORT WND (MPH) E 18 SE 18
VENT RATE (KT-FT) 57120 48160
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ002-150930-
ST CROIX-
517 AM AST WED JAN 14 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 50 50
TEMP (24H TREND) 86 (+1) 72 (-2) 86
RH % (24H TREND) 62 (-2) 98 (+9) 65
WIND 20FT/EARLY(MPH) E 14 G18 E 13 E 14 G18
WIND 20FT/LATE(MPH) E 14 G18 E 13 E 14 G18
MIXING HGT(FT-AGL/MSL)4120 3780
TRANSPORT WND (MPH) E 20 SE 18
VENT RATE (KT-FT) 70040 60480
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
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